標題: Improvement of stability and efficiency in diode-pumped passively Q-switched intracavity optical parametric oscillator with a monolithic cavity
作者: Huang, J. Y.
Zhuang, W. Z.
Huang, Y. P.
Huang, Y. J.
Su, K. W.
Chen, Y. F.
電子物理學系
Department of Electrophysics
關鍵字: diode-pumped;passively Q-switched;intracavity optical parametric oscillator
公開日期: 2012
摘要: We improve the performance of intracavity optical parametric oscillator (IOPO) pumped by a diode-pumped Q-switched Nd:YVO4/Cr4+:YAG laser. The IOPO cavity is formed independently by a monolithic KTP crystal that the mirrors are directly deposited on top of the nonlinear crystal. We study the performances of this IOPO cavity with different reflectivity of the output coupler at 1.5 mu m (R-s) of 80 and 50%. The average power of 1.5 mu m is up to 3.3 W at the maximum pump power of 16.8Wfor both cases. The diode-to-signal conversion efficiency is up to 20%, which is the highest one for IOPOs to our best knowledge. At the maximum pump power, the pulse energies are 41 mu J with the pulse width of 3 ns at a pulse repetition rate (PRR) of 80 kHz for R-s = 80% and 51 mu J with the pulse width of 1.2 ns at a PRR of 65 kHz for R-s = 50%, respectively. The pulse amplitude fluctuations in standard deviation are 2.6% for R-s = 80% and 4% for R-s = 50%, respectively. [GRAPHICS] (C) 2012 by Astro, Ltd.
URI: http://hdl.handle.net/11536/16561
ISSN: 1612-2011
期刊: LASER PHYSICS LETTERS
Volume: 9
Issue: 7
結束頁: 485
顯示於類別:期刊論文